The "Lisp vs Java" FAQ

So many people have asked me this question about my
Lisp vs. Java study that I decided to
write this, the world's shortest FAQ :-)

Your study, published in 2000, says that the Java programmers
had an average of 7.7 years of experience. But Java was only invented
in 1995! How is this possible?

The answer is very simple: the programmers had an average of 7.7
years of total programming experience, not 7.7 years of
programming experience in Java.

(No one has actually asked this question yet, but just in case it ever
occurs to someone to actually go back and read Prechelt's original
study...)

Prechelt reports that "On average, the Java
programmers had only half as much programming experience in Java as
the C programmers had in C or the C++ programmers had in C++."
How is this possible?

I'm not sure where this statement comes from. The raw data from the
study provided to me by Prechelt did not contain any langauge-specific
experience data. The only langauge-specific data was the number of
lines of code written in the langauge in question, but this is not
necessarily a valid measure of experience because in general a Java
program will be shorter than an equivalent C or C++ program (and a
Lisp program will be shorter still). The only way to really answer
this question is to ask Prechelt.
If someone does, please let me know
what he said.